UK prescribed medical cannabis is vaporised rather than smoked to avoid harmful...

https://quebeck-wiki.win/index.php/What_Does_%E2%80%98Counselling_the_Patient%E2%80%99_Mean_at_the_Pharmacy%3F

UK prescribed medical cannabis is vaporised rather than smoked to avoid harmful toxins. The effectiveness varies with device type—conduction heats directly, convection uses hot air—and temperature controls dosage and flavour